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In a bicentric quadrilateral ABCD, I is the incenter and O the circumcenter, If AI =4 and CI =2, find the inradius. A bicentric quadrilateral ABCD is a convex quadrilateral that has both an incircle I and a circumcircle O.

Home | Search | Geometry | Problems | All Problems | Open Problems | Visual Index | 10 Problems | Problems Art Gallery | Art | 901-910 | Quadrilaterals | Cyclic Quadrilateral | Tangential or circumscribed quadrilateral | Circle Tangent Line | Solution / comment | by Antonio Gutierrez